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为改善液力式自动变速器换档过程中新档离合器接合过程中的滑动摩擦过程,提高换档过程的平顺性与快速性,本文针对换档惯性向新档离合器的滑摩过程对换档品质的影响,采用工程上普遍使用的PID控制器,通过选取能够反映良好换档品质的离合器转速差参考轨迹,对新档离合器的啮合速度进行跟踪控制。采用多领域仿真软件AMESim搭建了整车动力学模型,进而利用随机算法对PID控制器参数范围进行整定,并选取满足性能指标的一组参数进行仿真验证,离线仿真结果表明,基于PID的离合器滑摩控制器能够较好地实现对期望离合器转速差曲线的跟踪,较好地适应外界工况的变化,并保证良好的换档品质。最后对控制器进行了快速原型仿真实验,进一步验证了控制器的有效性及实时性。
In order to improve the sliding friction process of the new clutch during the shift process of the hydraulic automatic transmission and improve the ride comfort and rapidity of the shift process, this paper aims at the shift quality of shift clutch inertia to the new clutch , The PID controller which is commonly used in engineering is adopted to track and control the engagement speed of the new clutch by selecting the reference track of the clutch speed difference which can reflect the good shift quality. The multi-domain simulation software AMESim was used to build the vehicle dynamics model, then the stochastic algorithm was used to set the parameters of the PID controller. A set of parameters that satisfied the performance index were selected for simulation. The offline simulation results showed that the PID-based clutch slip Motor controller can better achieve the expected clutch speed curve of the track, better adapt to changes in the external conditions, and ensure good shift quality. Finally, a rapid prototyping simulation of the controller was carried out to further verify the effectiveness and real-time performance of the controller.